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There are three students X, Y, and Z. One of them is Alpha who always tells truth. Beta always lies and Gamma can tell truth as well as lie. X declares that he is not Beta. Y says he is Beta. Z says he is not Beta. Who is Gamma?....(GIVE REASON)

There are three students X, Y, and Z. One of them is Alpha who always tells truth. Beta always lies and Gamma can tell truth as well as lie. X declares that he is not Beta. Y says he is Beta. Z says he is not
Beta. Who is Gamma?....(GIVE REASON)

Grade:12

1 Answers

Kushagra
13 Points
3 years ago
The gamma is Y. Y says he is the beta. If he is the alpha then his statement becomes false and alpha can`t lie. If he is beta then his statement becomes true n beta can`t tell the truth. Hence Y is neither alpha nor beta. So he is gamma and is lying.

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